The bear's tears - Craig Thomas

The trap was baited and waiting. Waiting for forty years and MI5's Aubrey to step right into it ... And then one of British Intelligence's most formidable figures would be heading for disgrace and British Intelligence would be heading for disaster.

But Aubrey still had one or two tricks up his sleeve. And one or two friends determined that things would not go according to plan. Friends, like, Hyde his Australian right-hand man, who were prepared to risk everything on the bloody killing fields of Afghanistan and on the unsafe streets of Prague to seek the secret of Teardrop - the secret buried in the black heart of Moscow Centre.